摘要
应用机械合金化方法制备了FexTi100-x（摩尔分数，x=10-90）合金粉末，并利用冲击压缩方法将上述粉末制成了块状合金．粉末X射线衍射结果显示，所制备合金中包含非晶、纳米晶、过饱和固溶体等亚稳态的结构．冲击压缩后块状合金的X射线衍射图与冲击压缩前的基本没有发生变化，说明在冲击压缩过程中没有发生分解或再结晶．磁性测定结果显示，FexTi100-x合金在室温、800kA／m下的磁极化强度随着铁含量的减少而逐渐降低，当铁的摩尔分数为60％时，其磁极化强度接近于零．穆斯堡尔光谱分析结果显示，Fe—Ti合金含有α-Fe、体心立方结构的Fe-Ti过饱和固溶体以及非晶相．
Metastable alloy powders in the FexTi100-x （x= 10- 90, in mol%） system were prepared by mechanical alloying （MA） and the bulk alloys were consolidated by shock compression. From the XRD patterns of MA-treated powders, amorphous phases, nanocrystalline phases and/or metastable solid solution phases were observed in as-milled alloys. The XRD pattern of shock- consolidated bulk body did not change much from that of the MA-treated powder, which showed the metastable powder was successfully consolidated without decomposition or recrystallization. The magnetization of FexTi100-x metastable bulk alloys at room temperature under a field of 800 kA/m decreased with decreasing Fe concentration and approached zero at about x = 60. The results of Mossbauer spectrum indicated that Fe-Ti alloys included α-Fe, the extended bee Fe-Ti solid solution, and the amorphous phase.
出处
《江南大学学报（自然科学版）》
CAS
2007年第5期606-609,共4页
Joural of Jiangnan University (Natural Science Edition)
基金
国家自然科学基金项目(20676052)
